⼀场⻋祸让苏依⽂精神崩溃，坠⼊童年痛苦的回忆：妹妹苏依然爬上阁楼追飘落的⽓球⽽摔死。⽗⺟及身边的⼈都责怪是她没照看好妹妹，这些⼈⼀直是她⼼中的阴影，让她痛不欲⽣。为了让苏依⽂恢复正常，⼼理治疗师在催眠中为她精⼼设计了⼀个梦中故事，让她在梦中重新⾛过这段历程…………
When, at the beginning of Deus Irae, Father Javier stares at a crucifix, his expressions and his hands suggest that the nerves are consuming him. A flashback reveals that this priest devotes his life to visiting families that claim to have seen things that do not belong to this world and cleansing their homes from the demons that try to possess them. But, upon returning to those houses, he notices that the evidence is always destroyed. This way, he discovers that a clan is after him, and must decide whether to hide from them or join them. In times when horror cinema tends to fall into the hands of directors that seek to build narratives that are introspective and close to reality, Pedro Cristiani goes back to old-school horror, where gore and the physical experience are above any other kind of feeling. A cinema that places the camera in front of the faces of the bloodiest demons and, instead of giving logic to them, chooses to face them whatever the cost.
民国年间，与世隔绝的怪水村被湖中“水猴子”所扰。此物实为濒危水栖人猿，能模仿人言诱杀村民。少年水生幼年目睹父亲惨死其手，自此深陷恐惧。村中长老三叔公借祭祀之名行愚昧统治，以活人献祭暂息水怪，却埋下更深祸根。连年暴雨与人为侵扰激怒水猴子，袭击频发。当香兰之弟被食、其父莫叔反抗被杀，香兰决意以身献祭复仇。水生幡然觉醒，不再逃避，联合青年村民布设机关陷阱，假借献祭诱敌。恶战后水怪被擒，却于庆功夜破笼而出，血洗村庄，三叔公亦命丧其口。村民终于醒悟：迷信退让换不来平安。水生断发持叉，率众设伏，以智慧与血勇将水怪斩杀。晨光中，他与香兰相扶而立，唯有直面恐惧、团结抗争，方能驱散千年阴霾，重获新生。
她杀了人，却让所有人都相信，该死的是她自己……你以为她是猎物？她才是真正的陷阱！
影片讲述了一个绝望浪漫者的愿望引发超自然诅咒的故事。Woe（迈克尔·约翰斯顿 饰）长期暗恋童年好友Nikki（印达·纳瓦雷特 饰），在一次表白失败后，他通过一件具有“猴爪”式超自然力量的 饰品许愿，希望Nikki能爱上他。但随着愿望成真，Nikki的行为逐渐变得异常，她的偏执和人格扭曲暗示其自主意识被某种恶意实体取代。
